KR102203075B1 - Sealing member - Google Patents

Abstract

(assignment)
To provide a sealing member having improved sealing performance by reducing the sliding loss between the side seal and the side housing provided on the side of a rotating body rotating while whirling in the housing.
(Solution)
It is installed between the rotating body 5 that rotates while whirling in the accommodation chamber 4 divided by the housing and the side wall 3 of the accommodation chamber 4, and slides with the side wall 3 As a sealing member 11 having a surface S, the sliding surface S has a first lubrication mechanism 21 arranged on one side in the longitudinal direction, and a first lubrication mechanism 21 arranged on the other side in the longitudinal direction. A second lubrication mechanism 21 that exhibits lubrication performance in a sliding direction different from that of the lubrication mechanism 21 is provided.

Description

Sealing member

The present invention relates to a sealing member for sealing a side surface of a rotating body rotating while whirling, such as, for example, a rotary engine rotor and a rotary compressor.

In a rotary engine, a substantially triangular rotor is accommodated in a rotor accommodating chamber consisting of a rotor housing and a side housing, and three operating chambers are formed between the triangular rotor and the rotor housing, and the rotor can freely rotate with respect to the eccentric wheel of the eccentric shaft. Supported. In addition, an apex seal is attached to the rotor at each vertex of the triangular rotor to maintain the airtightness of the three operating chambers, and a side seal is attached to each side of the side of the triangular rotor to maintain airtightness between the rotor and the side housing. It is attached to the joint between the apex seal and the side seal, and is installed between the inner circumference of the rotor and the side housing, and the corner seal to maintain the airtightness of the operating room or side housing, and the oil used for cooling the rotor leaks into the operating room. Oil seal is installed to prevent it. These various seals are sealed while sliding between the rotor, the rotor housing, and the side housing (see, for example, Patent Document 1).

Japanese Unexamined Patent Application Publication No. 2013-72425 (Pages 4-5, Figures 1-Figure 6)

However, among the various seals of Patent Document 1, the side seal is attached over approximately the entire length of each side surface of the triangular rotor, so the contact area is large, and since it is attached to the outer circumferential side of the rotor, the sliding loss is large because the sliding speed is high . In addition, in order to reduce the sliding loss of the side seal, even if a lubrication groove is provided on the sliding surface of the side seal, the rotor rotating while whirling changes the sliding direction during one rotation, so fluid cannot be received in the lubrication groove. The sliding loss could not be reduced. Such a side seal having a large contact area and sliding speed has a large sliding loss as well as a large abrasion due to sliding, so the sealing function of the side seal is deteriorated, and the engine is caused by a decrease in pressure during compression of the rotor or an increase in blow-by gas. There was a problem that the efficiency was lowered.

The present invention is to provide a sealing member that improves sealing performance by reducing the sliding loss between the side seal and the side housing installed on the side of a rotating body that rotates while whirling in a housing such as a rotary engine or a rotor of a rotary compressor. It is for the purpose.

In order to solve the above problem, the sealing member of the present invention

A sealing member installed between a rotating body that rotates whirling while whirling in an accommodation chamber partitioned by a housing and a side wall of the housing, and has a sliding surface that slides with the side wall,

The sliding surface is a first lubrication mechanism arranged on one side in the longitudinal direction, and a second lubrication mechanism arranged on the other side in the longitudinal direction and exhibiting a lubricating performance in a sliding direction different from the first lubrication mechanism. It characterized in that it comprises a.

According to this feature, even if the sliding direction between the sealing member and the side wall changes during one rotation of the whirling rotating body, the first lubrication mechanism and the second lubrication mechanism exhibit lubricating performance in different directions. In addition to reducing the sliding loss between the and the side walls, it is possible to reduce abrasion of the sealing member and the side walls, thereby improving the sealing performance of the sealing member.

The sealing member of the present invention

The first lubrication mechanism and the second lubrication mechanism have a blocking wall portion that closes at least one side and an opening portion that opens the other side,

The first lubrication mechanism is characterized in that it has a first opening that faces outward in the radial direction of the rotating body, and the second lubrication mechanism includes a second opening that faces inward in the radial direction of the rotating body.

According to this feature, even if the sliding direction between the sealing member and the side wall changes during one rotation of the rotating body, the first lubrication mechanism and the second lubrication from the first and second openings open in different directions, respectively. The fluid flows into the device efficiently, and the flowed fluid is blocked in the obstruction wall and the pressure rises, and the fluid whose pressure rises is supplied to the sliding surface to lubricate the sliding surface. Thereby, while the sliding loss between the sealing member and the side wall can be reduced, wear of the sealing member and the side wall can be reduced, and the sealing performance of the sealing member can be improved.

The sealing member of the present invention

The first lubrication mechanism and the second lubrication mechanism have a blocking wall portion that closes at least one side and an opening portion that opens the other side,

The first lubrication mechanism is characterized in that it has a first opening that faces radially inward of the rotating body, and the second lubrication mechanism includes a second opening that faces radially outward of the rotating body.

According to this feature, the fluid scraped off by the sealing member is supplied to the first lubrication mechanism and the second lubrication mechanism by rotation of the rotating body, and the first lubrication mechanism 31 and the second lubrication mechanism 32 are sealing members. The sliding surface of the can be maintained in a lubricated state.

The sealing member of the present invention

The first lubrication mechanism and the second lubrication mechanism are characterized in that each of the opening portions is provided with the closing wall portion on a rotational direction retarding side of the rotating body.

According to this feature, the first lubrication mechanism and the second lubrication mechanism can efficiently receive fluid.

The sealing member of the present invention

The sliding surface is characterized by having a plurality of the first lubrication mechanisms and the second lubrication mechanisms, respectively.

According to this feature, even when the length of the sliding surface is long, a plurality of first and second lubricating mechanisms having different lubrication performances depending on the position of the sliding surface are arranged, respectively, to reduce the sliding loss and improve the sealing performance. I can.

The sealing member of the present invention

The first lubrication mechanism and the second lubrication mechanism are characterized in that they are formed of rhombic recesses.

According to this feature, the first lubrication mechanism and the second lubrication mechanism can be easily configured by a lubrication mechanism having a rhombic concave portion.

1 is a longitudinal sectional view showing a rotating body having a sealing member according to the present invention and rotating while whirling in an accommodation chamber.
Fig. 2 is a view showing a velocity distribution of a sliding surface of a sealing member when a rotating body rotating while whirling in an accommodation chamber rotates once.
3 is a view showing a lubrication mechanism provided on the sliding surface of the sealing member according to the first embodiment.
4(a) is an AA perspective view of FIG. 3, (b) is a BB perspective view of FIG. 3, (c) is a CC perspective view of FIG. 3, and (d) is a DD perspective view of FIG.
5 is a view showing a lubrication mechanism provided on the sliding surface of the sealing member according to the second embodiment.
FIG. 6(a) is a EE view of FIG. 5, (b) is a FF view of FIG. 5, (c) is a GG view of FIG. 5, and (d) is an HH view of FIG. 5.

Hereinafter, with reference to the drawings, embodiments for carrying out the present invention will be exemplarily described based on examples. However, dimensions, materials, shapes, relative arrangements, etc. of the constituent parts described in this embodiment are not intended to limit the scope of the present invention to them, unless specifically stated otherwise.

(Example 1)

Referring to Figs. 1 to 4, a sealing member according to the present invention will be described. In addition, in this embodiment, as the sealing member according to the present invention, a side seal that seals between the side surface of the rotor for a rotary engine and the side housing will be described as an example.

In Fig. 1, the rotary engine 1 has a rotor housing 2 having an inner peripheral wall 2a of a peritrochoidal curve in section 2, and a pair of side housings 3 that insert the rotor housing 2 from both sides in the axial direction. ) (The side barrier of the present invention) and the rotor 5 accommodated in the accommodation chamber 4 partitioned by the rotor housing 2 and the side housing 3 and has a triangular shape ( Rotating body), and three operating chambers 6 partitioned by an outer peripheral wall of the rotor 5 and a trochoidal inner peripheral wall 2a.

In addition, an eccentric shaft 7 is provided passing through approximately the center of the pair of side housings 3, and the rotor 5 is fitted to the eccentric wheel 7a of the eccentric shaft 7, and the eccentric shaft ( The rotation is supported freely in an eccentric state with respect to the axis of 7). In addition, the inner cogwheel (8) installed on the inside of the rotor (5) is engaged with the fixed cog (9) installed on the side housing (3) side, so that the rotor (5) rotates and revolves around the eccentric shaft (7). do. Thereby, the volume of the operating chamber 6 increases or decreases with the rotation of the rotor 5.

The triangular rotor 5 is attached to each vertex and slides with the inner circumferential wall 2a to maintain the airtightness of the three operating chambers 6, the apex seal 10, and each side of the triangular rotor 5 A side seal 11 (sealing member according to the present invention) for maintaining airtightness between the rotor 5 and the side housing 3 and attached to the joint of the apex seal 10 and the side seal 11 And a corner seal 12 for maintaining the airtightness of the operating chamber 6 or the side housing 3 is provided. In addition, an oil seal 15 is installed on the inner diameter side of the rotor 5 to prevent the cooling oil cooling the inner space of the rotor 5 from leaking into the operating chamber 6. These various seals are sliding with the rotor housing and the side housing while sealing the space between the rotor and the rotor housing and the side housing. In addition, cooling oil for cooling the rotor 5 from the inside is supplied to the inner space of the rotor 5, and part of this cooling oil allows the apex seal 10, side seal 11, and corner seal ( 12) is intended to be lubricated.

Among the apex seals 10, side seals 11, corner seals 12, and oil seals 15, the side seals 11 are attached over approximately the entire length of each side surface of the triangular rotor. The contact area with 3) is large, and since it is attached to the outer circumference of the rotor, the sliding speed is also large, so the sliding loss is large. In addition, in order to reduce the sliding loss of the side seal 11, even if a lubricating groove is provided on the sliding surface of the side seal 11, the rotor 5 rotating while whirling moves with the side seal 11 during one rotation. Since the sliding direction of the side housing 3 changes, the fluid cannot be sufficiently received in the lubrication groove, and the sliding loss cannot be reduced.

2 shows the sliding speed along the longitudinal direction of the sliding surface S of the side seal 11. In Fig. 2, in order to show the change in the sliding speed of one side seal 11 when the rotor 5 rotates once, instead of rotating the rotor 5, the rotor 5 is fixed and the rotor housing The distribution of the sliding speed of the sliding surface when (2) and the side housing 3 are rotated once counterclockwise is shown. In addition, the upper side (s1) from the center of the sliding surface indicates the rotation direction delay side of the rotor (hereinafter referred to as “rotation direction delay side (s1)”), and the lower side (s2) from the center of the sliding surface is the rotation of the rotor. The direction advancing side (hereinafter, referred to as "rotation direction advancing side (s2)") is shown. In addition, FIG. 2 shows a case in which the rotor 5 is fixed and the rotor housing 2 and the side housing 3 are rotated counterclockwise. Conversely, when the rotor housing 2 and the side housing 3 are fixed, The rotation direction of the rotor 5 is clockwise.

2(a) is a side seal at a position where the short axis (HH) of the rotor housing 2 and the apex seal 10 of the rotor 5 and the axis RR passing through the center of the rotor 5 coincide. It shows the distribution of the sliding speed of the sliding surface S of (11). The sliding speed Vs1 of the sliding surface in Fig. 2(a) has a large sliding speed in the rotation direction advancing side s2 close to the rotation direction delay side s1, and in the rotation direction advancing side s2 The direction of the sliding speed of is dominated by the speed in the direction from the inner diameter side to the outer diameter side of the sliding surface. On the other hand, the sliding speed on the rotational delay side s1 is small, and the direction of the sliding speed is a direction along the longitudinal direction of the sliding surface.

Fig. 2(b) shows the distribution of the sliding speed of the sliding surface S of the side seal 11 at a position in which the rotor housing 2 is rotated 120° counterclockwise from the position in Fig. 2(a). . In Fig. 2(b), the sliding speed Vs2 of the sliding surface represents approximately the same speed over the entire length of the sliding surface, and the direction of the sliding speed has a direction substantially along the longitudinal direction of the sliding surface.

Fig. 2(c) shows the distribution of the sliding speed of the sliding surface S of the side seal 11 at a position in which the rotor housing 2 is rotated by 240° counterclockwise from the position of Fig. 2(a). . The sliding speed Vs3 of the sliding surface in Fig. 2(c) has a large sliding speed in the rotation direction delay side s1 close to the rotation direction advance side s2, and in the rotation direction delay side s1 As for the direction of the sliding speed, the speed in the direction from the outer diameter side toward the inner diameter side of the sliding surface becomes dominant. On the other hand, the sliding speed on the rotational direction advancing side s2 is small, and the direction of the sliding speed is substantially along the longitudinal direction of the sliding surface S.

From the above, the sliding speed of the sliding surface S of the side seal 11 during one rotation of the rotor 5 is the sliding surface S from the inner diameter side regardless of the rotational position in the rotation direction traveling side s2. The speed in the direction toward the outer diameter side becomes dominant, on the other hand, in the rotation direction delay side s1, the speed in the direction from the outer diameter side toward the inner diameter side of the sliding surface S becomes dominant regardless of the rotation position. Therefore, a lubricating mechanism is installed on the sliding surface S of the side seal 11 according to the direction of the sliding speed of the sliding surface S to improve the sliding property.

Hereinafter, the side seal 11 provided with the 1st lubrication mechanism 21 and the 2nd lubrication mechanism 22 on the sliding surface S is demonstrated. As shown in Figs. 3 and 4, the side seal 11 is a rectangular member having a cross-sectional shape made of wall portions 11a, 11b, 11c, and 11d, and is a rod-shaped member in a planar view. The side seal 11 is fitted into the groove of the rotor 5 which is shallower than the thickness of the side seal 11, so that the space between the side seal 11 and the rotor 5 is sealed. In addition, the wall portion 11b of the side seal 11 functions as a sliding surface S, and the sliding surface S is an opening 21e that opens in the radial direction from the center portion in the longitudinal direction to the rotational delay side s1. A second lubrication mechanism having a plurality of first lubrication mechanisms 21 having a first lubrication mechanism 21 and an opening 22e that opens in a reverse direction to the first lubrication mechanism 21 on the rotation direction advancing side s2 from the center portion in the longitudinal direction. (22) is provided in plurality.

3 and 4, the first lubrication mechanism 21 is made of a concave portion having a rhombic bottom portion 21a in plan view, and the blocking wall portions 21b, 21c, 21d and the concave portion that block the concave portion It has an opening 21e which opens the outer side in the radial direction. Similarly, the second lubrication mechanism 22 is made of a concave portion having a rhombic bottom portion 22a in plan view, and the concave portion in a direction opposite to the blocking wall portions 22b, 22c, 22d and the opening portion 21e that closes the concave portion. It has an opening 22e which opens the inside in the radial direction. Further, the depth of the concave portion is formed to be about 1 μm to 100 μm.

As shown in Fig. 2, the sliding speed from the center of the sliding surface S of the side seal 11 to the rotational delay side s1 is dominant in the direction from the outer side to the inner side in the radial direction. Therefore, as shown in Fig. 3, by arranging and installing the first lubrication mechanism 21 having an opening 21e on the outer diameter side according to the direction of the sliding speed, the first lubrication mechanism 21 from the opening 21e The fluid flows into the inside efficiently, the flowed fluid is blocked by the blocking wall portions 21b, 21c, and 21d to increase the pressure, and the fluid with the increased pressure is supplied to the sliding surface S to lubricate the sliding surface S. . On the other hand, as for the sliding speed from the center of the sliding surface S of the side seal 11 to the advancing side s2, the speed in the radial direction from the inside to the outside becomes dominant. Therefore, by arranging the second lubrication mechanism 22 having the opening portion 22e on the inner diameter side in accordance with the direction of the sliding speed, the fluid flows efficiently into the second lubrication mechanism 22 from the opening portion 22e. , The flowed fluid was blocked by the blocking wall portions 22b, 22c, and 22d, thereby increasing the pressure, and the fluid having the increased pressure was supplied to the sliding surface S to lubricate the sliding surface S.

Further, the blocking wall portions 21b and 21d of the first lubrication mechanism 21 are inclined at an angle θ1 so as to be disposed on the delay side in the rotation direction with respect to the opening portion 21e. Similarly, the closing wall portions 22b and 22d of the second lubrication mechanism 22 are also inclined at an angle [theta]2 so as to be disposed on the retarding side in the rotation direction with respect to the opening portion 22e. Further, the angle θ1 and the angle θ2 are determined based on the size of the radial component and the circumferential component of the sliding speed of the sliding surface. Thereby, compared with the case where it is not inclined, the fluid flows into the first lubrication mechanism 21 and the second lubrication mechanism 22 with low loss, and the first lubrication mechanism 21 and the second lubrication mechanism 22 Since the fluid with increased pressure inside the sliding surface (S) is supplied to the sliding surface (S) so that the sliding surface (S) is efficiently lubricated, the sliding friction between the side housing (3) and the side seal (11) is reduced, and the side housing (3) And the wear of the side seal 11 is reduced, and the sealing performance of the side seal 11 can be improved.

As described above, even when the size and direction of the sliding speed in the sliding surface S of the side seal 11 installed on the rotor 5 rotating while whirling is changed, the sliding surface of the side seal 11 ( A group of first lubrication mechanisms 21 and second lubrication mechanisms 22 having openings 21e and 22e that open radially outward and inward, respectively, from the longitudinal center portion of S) to the rotational direction advancing side and the retarding side. ), the fluid efficiently flows into the first lubrication mechanism 21 and the second lubrication mechanism 22 from the opening portions 21e and 22e, and the first lubrication mechanism 21 and the second lubrication mechanism 22 ), the fluid whose pressure is increased is supplied to the sliding surface (S) to efficiently lubricate the sliding surface (S), so that sliding friction between the side housing 3 and the side seal 11 is reduced, and the side housing ( 3) The wear of the side seal 11 is reduced, and the sealing performance of the side seal 11 can be improved.

As described above, embodiments of the present invention have been described with reference to the drawings, but the specific configuration is not limited to these embodiments, and changes or additions within the scope not departing from the gist of the present invention are included in the present invention.

For example, in the above embodiment, the concave portion is formed in a rectangular shape inclined in plan view, but the present invention is not limited thereto, and may be formed as an elliptical concave portion or an inclined elliptical concave portion in plan view.

Moreover, although the bottoms 21a and 22a of the 1st lubrication mechanism 21 and the 2nd lubrication mechanism 22 are formed as a flat surface, it is not limited to this. For example, the bottom portions 21a and 22a may be inclined upwardly inclined from the opening portions 21e and 22e toward the closing wall portions 21c and 22c. As a result, the fluid can be further increased in pressure in the first lubrication mechanism 21 and the second lubrication mechanism 22, so even when it is difficult to form a fluid lubrication film in a high temperature state, the lubricating state of the sliding surface is maintained and sliding loss In addition to being able to reduce the wear, it is possible to improve the sealing performance by reducing the wear.

Moreover, in the said embodiment, the case where the length in the longitudinal direction of the central part of the sliding surface S is 0 was illustrated. However, the length in the longitudinal direction of the central portion is not limited to zero. For example, in the above embodiment, from the center of the sliding surface (S) to the rotation direction delay side (s1) and the rotation direction progress side (s2), the direction of the dominant sliding speed is approximately one regardless of the rotation position of the rotor. Could turn in the direction of. However, the direction of the sliding speed in the central portion of the sliding surface S fluctuates according to the rotational position of the rotor, and the direction of the dominant sliding speed may not be set in one direction in some cases. In this case, a third lubrication mechanism in which a first lubrication mechanism opening to the outer diameter side and a second lubrication mechanism opening to the inner diameter side are provided in parallel or alternately may be provided in the central portion. Then, a first lubrication mechanism having a first opening portion is provided on one side from the central portion provided with the third lubrication mechanism, and a second lubrication mechanism having a second opening portion is provided on the other side from the central portion, so that the sliding direction is It can also be made to respond to fluctuations.

In the above embodiment, although the length in the longitudinal direction of the rotation direction advancing side s2 and the length in the longitudinal direction of the rotation direction delay side s1 are substantially the same, it is not limited thereto. For example, the length in the longitudinal direction of the rotation direction advancing side s2 may be longer or shorter than the length in the longitudinal direction of the rotation direction delay side s1 according to the speed distribution of the sliding surface.

Further, in the above embodiment, the speed in the direction from the inner diameter side to the outer diameter side of the sliding surface S is dominant on the rotation direction advancing side (s2), and the sliding surface (S) on the rotation direction delay side (s1) An example has been described in which the speed in the direction from the outer diameter side to the inner diameter side becomes dominant. However, depending on the combination of the whirling motion of the rotating body different from the embodiment and the rotational direction of the rotating body, the sliding surface S is in a direction from the outer diameter side to the inner diameter side in the rotation direction progress side (s2). The speed becomes dominant, and the speed in the direction from the inner diameter side toward the outer diameter side of the sliding surface S on the rotation direction delay side s1 may dominate. Therefore, in accordance with the direction of the sliding speed of the sliding surface S of the side seal 11, the magnitude of the sliding speed, and the distribution of the sliding speed, a first lubrication mechanism opened to the outer diameter side and a second lubrication mechanism opened to the inner diameter side are provided. Needless to say to install.

(Example 2)

Next, a sealing member according to Example 2 will be described with reference to FIGS. 5 and 6. The side seal 11 according to the second embodiment is different in that the opening direction of the first lubrication mechanism and the opening direction of the second lubrication mechanism are opposite to those of the first embodiment, respectively. In addition, the same reference numerals and descriptions are omitted for overlapping configurations with the same configuration as in the above embodiment.

The side seal 11 according to the second embodiment includes a first lubrication mechanism 31 arranged from the central portion in the longitudinal direction of the side seal 11 to the rotational delay side s1, and the longitudinal direction of the side seal 11 A second lubrication mechanism 32 arranged from the central portion to the rotation direction advancing side s2 is provided, the first lubrication mechanism 31 has an opening 31e that is opened radially inward, and a second lubrication mechanism ( 32) has an opening 32e that opens outward in the radial direction. That is, the opening direction of the opening portion 31e of the first lubrication mechanism 31 and the opening direction of the opening portion 32e of the second lubrication mechanism 32 are opposite to each other.

3 and 4, the first lubrication mechanism 31 is made of a concave portion having a rhombic bottom portion 31a in plan view, and blocking wall portions 31b, 31c, and 31d for closing the periphery of the concave portion, and It has an opening 31e that opens the inside of the recess in the radial direction. Similarly, the second lubrication mechanism 32 is made of a concave portion having a rhombic bottom portion 32a in plan view, and the blocking wall portions 32b, 32c, 32d that block the periphery of the concave portion, and the concave portion open radially outward. It has an opening 32e. Further, the blocking wall portions 31b and 31d of the first lubrication mechanism 31 are inclined at an angle [theta]3 so as to be disposed on the delay side in the rotation direction with respect to the opening portion 31e. Similarly, the blocking wall portions 32b and 32d of the second lubrication mechanism 32 are also inclined at an angle ?4 so as to be disposed on the delay side in the rotation direction with respect to the opening portion 32e. Further, the depth of the concave portion is formed to be about 1 μm to 100 μm.

As described in Fig. 2, the sliding speed from the center of the sliding surface S of the side seal 11 to the rotational delay side s1 side is dominated by the speed in the radial direction from the outer side to the inner side. , As for the sliding speed from the center of the sliding surface S of the side seal 11 to the advancing side s2, the speed in the radial direction from the inside to the outside becomes dominant. Since the opening portion 31e of the first lubrication mechanism 31 of the second embodiment is opened radially inward, and the opening 32e of the second lubrication mechanism 32 is opened radially outward, the sliding speed is increased. The fluid cannot be efficiently received in the first lubrication mechanism 31 and the second lubrication mechanism 32 by using directly. However, in the side seal 11 of the second embodiment, the fluid (oil) scraped by the outer wall portion 11a and the inner wall portion 11c of the side seal 11 is first lubricated by the rotation of the rotor 5. Conveyed in the mechanism 31 and the second lubrication mechanism 32, the first lubrication mechanism 31 and the second lubrication mechanism 32 can maintain the sliding surface S of the side seal 11 in a lubricated state. . Hereinafter, the effect of the side seal 11 of the second embodiment will be described with reference to FIGS. 2, 5 and 6.

In Fig. 2(a), the sliding speed Vs1 of the sliding surface S of the side seal 11 is dominated by the speed toward the outer side in the radial direction. Thereby, the fluid (oil) on the wall surface of the side housing 3 is mainly scraped off by the inner wall portion 11c of the side seal 11. And in the process of rotating the rotor 5 from Figs. 2(a) to 2(b), the scraped fluid flows along the wall part 11c of the side seal 11, and the first lubrication mechanism 31 Flows into the first lubrication mechanism 31 from the opening portion 31e of the first lubrication mechanism 31, and a fluid is supplied from the inside of the first lubrication mechanism 31 to the sliding surface S of the side seal 11, The sliding surface S may maintain a fluid lubrication state.

Further, in the process shown in Fig. 2(b), the compressed fuel explodes. During this explosion, the sliding surface S of the side seal 11 rises from the side housing 3, and the scraped fluid is supplied to approximately the entire surface of the sliding surface S of the side seal 11, and the side seal ( The sliding surface (S) of 11) can maintain a fluid lubrication state.

Next, in Fig. 2(c), the sliding speed Vs1 of the sliding surface S of the side seal 11 is dominated by the speed in the direction from the outer side in the radial direction to the inner side in the radial direction. Thereby, the fluid on the wall surface of the side housing 3 is mainly scraped off by the outer wall portion 11a of the side seal 11. And, in the process of rotating the rotor 5 from Fig. 2(c) to Fig. 2(a), the scraped fluid is applied to the second side seal 11 along the wall part 11a of the side seal 11 It flows into the second lubrication mechanism 32 from the opening 32e of the lubrication mechanism 32, and a fluid is supplied from the inside of the second lubrication mechanism 32 to the sliding surface S of the side seal 11, and the side The sliding surface S of the seal 11 can maintain a fluid lubrication state.

Since the amount of fluid scraped off by the side seal 11 is large, a sufficient amount of fluid required to lubricate the sliding surface S of the side seal 11 can be supplied. And, the fluid scraped off by the side seal 11 is sufficiently supplied into the first lubrication mechanism 31 and the second lubrication mechanism 32 by the rotation of the rotor 5, and the first lubrication mechanism 31, 2 The lubrication mechanism 32 can maintain the sliding surface S of the side seal 11 in a lubricated state, and further, the sliding friction between the side housing 3 and the side seal 11 is reduced, and the side housing ( 3) The wear of the side seal 11 is reduced, and the sealing performance of the side seal 11 can be improved.

As described above, embodiments of the present invention have been described with reference to the drawings, but the specific configuration is not limited to these embodiments, and changes or additions within the scope not departing from the gist of the present invention are included in the present invention.

In the above embodiment, a side seal used for a rotor of a rotary engine has been described, but it is not limited to a rotary engine, and a side seal used for a rotary compressor may be used.

One… Rotary engine 2… Rotor housing
2a... Inner wall 3… Side housing (side barrier)
4… Room 5… Rotor (rotator)
6... Operation room 7... Eccentric shaft
8… Inner cogwheel 9... Fixed gear
10… Apex Seal 11... Side seal (sealing member)
11a... Wall part 11b... Wall (Sliding Surface (S))
11c... Wall part 11d... Wall
21... First lubrication mechanism 21a... Bottom
21b... Closing wall part 21c... Obstruction wall
21d... Obstruction wall 21e... Opening
22... 2nd lubrication mechanism 22a... Bottom
22b... Blocking wall part 22c... Obstruction wall
22d... Blocking wall part 22e... Opening
31... 1st lubrication mechanism 31a... Bottom
31b... Closing wall part 31c... Obstruction wall
31d... Closing wall part 31e... Opening
32... 2nd lubrication mechanism 32a... Bottom
32b... Obstruction wall part 32c... Obstruction wall
32d... Obstruction wall 32e... Opening
S… Sliding surface

Claims (10)

A sealing member installed between a rotating body that rotates whirling while whirling in an accommodation chamber partitioned by a housing and a side wall of the accommodation chamber, and has a sliding surface that slides with the side wall,
A first lubrication mechanism arranged on one side of the sliding surface in the longitudinal direction, and a second lubrication mechanism arranged on the other side of the longitudinal direction,
The first lubrication mechanism is made of a concave portion, the concave portion is made of a bottom portion, a blocking wall portion that closes the circumference of the concave portion, and a first opening portion that opens outward in the radial direction of the rotating body,
The second lubrication mechanism comprises a concave portion, and the concave portion includes a bottom portion, a blocking wall portion that closes the circumference of the concave portion, and a second opening portion that opens radially inward of the rotating body. The sealing member according to claim 1, wherein a plurality of the first lubrication mechanisms and the second lubrication mechanisms are provided. The sealing member according to claim 1, wherein the blocking wall portion is provided on a rotational direction delay side of the rotating body with respect to the first opening portion and the second opening portion. The method of claim 1, wherein a plurality of the first lubrication mechanism and the second lubrication mechanism are provided,
The sealing member, characterized in that the closing wall portion is installed on the rotational direction delay side of the rotating body with respect to the first opening portion and the second opening portion. A sealing member installed between a rotating body that rotates whirling while whirling in an accommodation chamber partitioned by a housing and a side wall of the accommodation chamber, and has a sliding surface that slides with the side wall,
A first lubrication mechanism arranged on one side of the sliding surface in the longitudinal direction, and a second lubrication mechanism arranged on the other side of the longitudinal direction,
The first lubrication mechanism is made of a concave portion, the concave portion is composed of a bottom portion, a blocking wall portion that closes the circumference of the concave portion, and a first opening portion that opens inward in the radial direction of the rotating body,
The second lubrication mechanism comprises a concave portion, and the concave portion includes a bottom portion, a blocking wall portion that closes the circumference of the concave portion, and a second opening portion that opens outward in a radial direction of the rotating body. The sealing member according to claim 5, wherein a plurality of the first lubrication mechanisms and the second lubrication mechanisms are provided. 6. The sealing member according to claim 5, wherein the closing wall portion is provided on a rotational direction retarding side of the rotating body with respect to the first opening portion and the second opening portion. The method according to claim 5, wherein a plurality of the first lubrication mechanism and the second lubrication mechanism are provided,
The sealing member, characterized in that the closing wall portion is installed on the rotational direction delay side of the rotating body with respect to the first opening portion and the second opening portion. The sealing member according to any one of claims 1 to 8, wherein one side in the longitudinal direction is a rotation direction delay side. The sealing member according to any one of claims 1 to 8, wherein the concave portion has a rhombus shape.

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